Vehicle-tire.



0. SW NNNNNN 1 VEHICLE TIRE. APPLICATION FILED D EQ. 1 9 0 8.

UNITED STATES PATENT OFFICE.

VEHICLE-TIRE.

Application filed December Specification of Letters Patent.

Patented Apr. 5, 1910.

7, 1908. Serial No. 466,341.

To all whom it may concern:

Be it known that I, BnNJAMIN Umrronn SWINEHART, a citizen of the United btates,

residing at Akron, 1n the county of Summit the general type shown and illustrated in United States Letters Patent No. 771,947 granted to James A. Swinehart on October 11, 190st. and is designed to be an improve ment thereon, the object being to so construct a tire that the cross wires embedded in the body of the same are held in position and forced outwardly and laterally into engaging relation with the tire-retaining means by reason of the fact that their inner ends extend across a central circumfcrential opening in the base of the tire bodyand abut against the opposite surface of said opening, whereby when said opening is contracted, clue to the placing of the tire in a rim, or to the pressure of a load upon the tread of the tire, the tendency will be to force the crosswires outwardly or laterally, causing their outer ends to engage the tire-retaining means more perfectly than if the inner ends of the wires terminated within the opening at points remote from the surface thereof.

WVith the foregtnng hid other objects in view, the invention consists in the novel con- Stu-notion, combination and arrangement of parts constituting the inventionto be here inaftcr specifically described and illustrated in the accompanying drawings which form a part hereof wherein is shown the preferred inbodiment of the invention, but it. is to be 'llldGl'StOOCt that changes, variations and modifications can be resorted to which come within the scope of the claim hereunto appended.

In the drawings, in which similar refer ence Illlll'lQltllS indicate like parts in the different figures: Figure 1 is a. cross sectional perspective view of the rim-portion of :1 vehicle wheel with a tire mounted thereon, embodying this invention; and. Fig. 2 is a cross sectional perspective view of a tire similarly provided previous to being mounted on a vehicle wheel rim.

Referring to the drawii'igs in detail, the reference numeral 1 denotes a tire composed of a 'body of rubber of suitable resiliency preferably provided with a beaded or corrugated tread portion 2 and further having j formed in the base or inner face thereof, preferably centrally beneath the traul portion, a circumferenthilly-extending groove or opening 3, usually cylindrical in cross-section which extends completely around the inner surface of the tire. The side portions of the tire are provided with means to cooperate with the tire-engaging portions of the rim on which the same is mounted and in the tire shown in the drawings the lateral portions are provided with circumferentially extending grooves 4, below which are laterally-projecting beads 5. The circumferential grooves 4 are adapted to receive the inturned clenchcr flanges (S of a rim 7, oils tomarily employed for holding this type of tire in position on a vehicle wheel. In positioning a tire of this description in a rim such as has just been described, the laterallyprojecting beads 5 will project into the concave inner portions of the flanges (S and lock thereunder.

The locking means for the tire consists of two series of cross wires or rods 8, the members of each series extending through the outer edges of the late at beads 5 into the opening or groove 3 and each is of sufficient: length to abut against the opposite wall or surface thereof. The members of each series of cross wires 8 are placed in staggered relation with the members of the opposite series so that they will alternate in position with respect thereto, with all the inner ends of the members of both series extending into and across the opening or groove 3 from opposite sides thereof and abutting against the opposite surfaces of said opening orgroovet.

In constructing a tire of this description, the wires 8 w'll be inserted in the body of the tire through the beads 5 until their inner ends extend across the. opening 3 and abut against the opposite surface thereof and they will be of such a length, when first positioned, that their outer ends 9 will project a slight distance beyond the normal outlines of the heads 5, as clearly shown in Fig. 2.

\Vhen a tire such as is shown in Fig.2 is mounted in a wheel rim in the manner illustrated in Fig. 1, the outer or projecting ends 9 of the wires 8 will be forced inwardly until theyare approximately flush with the surfaces of the beads 45, thereby enlarging or distorting the shape of the opening 3, as shown in Fig. 1 and also placing on the material in the base of the tire, adjacent the opening, an increased degree of tension or compression, so that the tendency of the material of which the tire is composed in its effort to resume its normal condition, due to its inherent elasticity, will constantly tend to force th' cross wires outwardly against the concave surfaces of the flanges 6, thereby kee ing the wires fixedly in position in the b0 y of the tire with their outer ends in the heads 5 to engage under the inturned clencher flanges 6. It will be apparent that pressure placed u on the tread of a tire, such as that caused y aload on the vehicle when in use, will tend to contract the opening 3, causing thereby an increased pressure on the inner ends of the wires 8, thus forcing them into snug engagement with the tire-retaining flanges 6.

The peculiar object and function attained thereof; nor could this object be attained if the ends of the wires were embedded or submerged in the material of the tire itself, for the reason that in the former case where the cross wires are terminated within the opening, their inner ends would be unsupported and the entire wires would be ermitted a longitudinalmovement wnich would prevent their being forced outwardly by the pressure of the material. If the inner ends of the wires were embedded or submerged in the material of the tire the slight movement of the same, due to the movement of the tireunder a load, would cause the ends of the tire to out through the material of the body portion much more rapidly than if the ends were placed in abutting relation with the surface of the opening.

It will be noted that when the cross wires 8 are placed in position their inner ends are in abutting relation with the surface.

of the opening 3, as has been described, and their inner ends extend laterally beyond the sides of the tire so that when the tire is positioned in a rim and the outer ends of the cross wires forced inwardly flush with the outside surface of the tire, the material on both sides of the opening is compressed, thereby adding greater rigidity and firmness to the base portion of the tire and making the same more efficient in use and less liable to be torn from its seat in the rim.

What I claim and desire to secure by Letters Patent, is

A vehicle tire comprising the combina tion with a rim having the sides thereot inturned to provide clenclmrs and a body of elastic material mounted in the rim and formed with a tread and, a base having circumferential1y extending groove in its inner face to separate the base into two sections, a series of combined spreading and holding wires embedded in and extending transversely of each of the sections of the base, said wires of such a length as to en tend from the wall of the groove to beyond the lateral face of the base at the opposite side when the body is detached from the T rim, the wires of one series oppositely posed with respect to the wires of the other series whereby when said body is mounted in the rim, the wires will late ally the sections to wedge within. and tr ally engage the clenchers of the rii the wires permanently bear a inner faces of the clenchers to p: ing of said body.

In testimony 'whereof I hereunto set In hand in presence of two subscribing witnesses.

BENJAMIN ClllltFtlRl) tiWlNEHART. lVitnesses:

C. E. HUMPHREY, GLENARA Fox.

it creep- 

